Can You Prevent or Reverse Grey Hair? What the Science Says OMI Wellbeauty Gray Hair: Causes and What Research Says About Prevention Gray hair can be reversed according to a new study. Reversing Gray Hair: Inspiring the Development of New Therapies Through Research on Hair Pigmentation and Repigmentation Progress Comment hair to get free ebook. Science of Early Greying (<30 years): When melanocytes (the pigment making cells) lose energy and protection from free radicals, they stop producing melanin and your black turns Is it possible to reverse grey hair? While grey hair reversal can be observed in certain circumstances, there is no reliable intervention to reverse grey hair. #greyhairreversal #greyhair #hairgreying